1832–1868: The Hundreds of Abdick and Bulstone, Andersfield, Cannington, Carhampton, Crewkerne, North Curry, Houndsborough, Berwick and Coker, Huntspill and Puriton, Kingsbury East, Kingsbury West, Martock, Milverton, North Petherton, South Petherton, Pitney, Somerton, Stone, Taunton and Taunton Deane, Tintinhull, Whitley, and Williton and Freemanors.

The constituency might have been better described as South-Western Somerset, since it stretched to the southern as well as the western extremities of the county.

It surrounded the county town of Taunton (although Taunton was a borough electing MPs in its own right, freeholders within the borough who met the property-owning qualifications for the county franchise could vote in West Somerset as well, as could those in Bridgwater); otherwise, the largest town was Yeovil, but the division also included Chard, Crewkerne, Minehead, Wellington, Ilminster, Street, Watchet and Wiveliscombe; nevertheless, the majority of voters were in the rural areas.

It gave the county a third division, Mid Somerset into which were moved the eastern end of this seat (including Yeovil, Street and Crewkerne).

The West gained a new main town, Bridgwater, its seats abolished partly for corruption.